Malicious PDF — malware analysis report

Static analysis result for SHA-256 0598c193a83fb8b7…

MALICIOUS

PDF

72.5 KB Created: 2021-03-05 07:10:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fc1f1ffc3f2c880713d8f6cfe86e19f8 SHA-1: cc4f123949b0b3e1835b9aaa035d3e2c54fa5c2a SHA-256: 0598c193a83fb8b751dedfff9bef2790be9a36b649a5817e03208e6ae9e38d8b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/wix?keyword=mk+karnage+moves PDF link annotation
    • http://netewe8.xyz/coursera_java_for_androidte8yr.pdfIn PDF document text
    • http://ersoil.fun/elodea_photosynthesis_lab_worksheet1l8ed.pdfIn PDF document text
    • https://molefagis.weebly.com/uploads/1/3/5/3/135311004/zelomemaji_vigolevipiwalim_midezu.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/6c3b0aa74c9.pdfIn PDF document text
    • https://retelajipubo.weebly.com/uploads/1/3/4/7/134700068/wupiwifevul.pdfIn PDF document text
    • http://toxedajenoxin.66ghz.com/ajax_php_post_form.pdfIn PDF document text
    • http://wspring.space/gekodolotomekefagojaxavggq1.pdfIn PDF document text
    • http://jinosewifuwefe.22web.org/titas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xidazeze/89879416930.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/ma_drivers_license_restrictions_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/4740681344.pdfIn PDF document text
    • http://darozux.epizy.com/cash_reconciliation_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04846d57-39c3-4e3a-96d8-cd0a44515c6c/96300515407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c99bf46-7393-4c24-8a10-263e91d5cbee/15898171051.pdfIn PDF document text
    • http://gumusijejokezit.epizy.com/87664363645.pdfIn PDF document text
    • http://xojutavuvexiso.rf.gd/79618778169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179ed080-3165-44aa-9d8b-2238d894a13e/65377616787.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/vilefeweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b675ad76-7a88-435b-8a88-4cd6b259f1bf/35545760525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d62ed7b-ef7f-4dbe-b5b1-8cbb14555f9a/como_hacer_una_corona_de_adviento_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/amcas_applicant_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE021 5100 bytes
SHA-256: c3ab178bd54b0de62c4a185bb6543481319af24bcc97466c7c4fced8d6040ae9
font_01_sfnt_off0000f181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF181 10480 bytes
SHA-256: f561bfa7f985b976901ffd6828661dfaf0e792684f0b7b0d62b13067e05d4190

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